Shields posts 963,956 emails at 2.72% replies for his agency

James Shields published the numbers behind his agency's mass sending from 1 March to 1 October 2026. He says the system sent 963,956 emails to 569,299 people, pulled 15,511 replies at 2.72%, and produced 1,904 interested leads. He attributes nearly $300k in revenue for his agency to it this year.

That works out to roughly one interested reply for every 300 people contacted, which is the ratio Shields says everything else in the system is built around. Volume sits at about 4,500 emails a day across roughly 150 inboxes, at 20 to 40 emails per inbox per day, 2 to 3 inboxes per domain, on lookalike .com domains rather than the main one. Warmup runs 2 to 3 weeks and is left running after launch. Open and click tracking is off.

The offer carries the risk

Step one in his breakdown is an offer the prospect can accept in a single line. Shields says the agency only gets paid per qualified call that shows up on the client's calendar, so the risk sits with the sender. His claim is that this changes the shape of the reply, from a request for pricing to a question about how the model works.

On lists, he argues the default Apollo export has already been hit by every agency in the niche. His sources instead are Google Maps and niche directories, job boards for companies hiring sales reps, and a Clay waterfall to find and verify emails. Catch-all addresses get their own separate campaign rather than being mixed into the main send.

Short emails, few follow-ups

Copy is under 80 words, their world first then the offer, no links or images in email one, and the ask is for interest rather than time, with "worth a look?" as the line he gives. Follow-ups stay in the same thread. The notable number is that the agency averages 1.7 emails per person, which is close to one send and one follow-up.

Reply handling is the last step. Every reply gets labelled by intent, which Shields says AI does for them. Interested replies get two specific call times rather than a booking link, and "not now" replies get re-mailed in 60 to 90 days.

For people sending, the revenue figure is self-reported and sits on top of an offer most agencies cannot copy, since performance pricing moves the risk onto the sender. The ratio is the portable part. At one interested reply per 300 contacts, the arithmetic says the list has to be large and fresh before any of the copy advice matters, which is exactly why Shields spends a step on sourcing rather than on sequence length.

James Shields

@scaling_shields

X

We average 1.7 emails per person. New people beat more follow-ups.

James Shields

@scaling_shields

X

We only get paid per qualified call that shows up on the client's calendar.